Automobile fan



E. H. ARNOLD. AUTOMOBILE FAN. APPLICATION FILED OCT. IIL-192|.

Patented Sept. 26, 1922.

Patented Sept. 25, i522.,

entrar erntenD ERNEST II ARNOLD, OE CLEVELAND, OHIO, ASSIGNOR TO HENRYM. STRONG, 0F CLEVELAND, OHIO.

AUTOMOBILE' FAN.

Application filed Gctober 14, 1921. Serial No. 507,647.

To all @07mm t may concern:

Be it known that l, ERNEST H. ARNOLD, a subject of the King of England,resident of Cleveland, county of Cuyahoga, and State of Ohio, haveinvented new and useful improvements in Automobile Fans, of which thefollowingl is a specification, the principle of the invention beingherein explained and the best mode in which have contemplated applyingthat principle, so as to distinguish it from other inventions.

My invention relates `to automobile fans, its object being to produce afan which will be efficient in the performance of its function, andwhich may be produced in an economical manner.

The said invention consists of means hereinafter lfully described andparticularly set forth inthe claims. More specifically, my inventionconsists of a fan whichis made of two parts,'a blade member and ahubmember, the major portion of the hubmember consisting,` of anintegral structure drawn from a disk of sheet metal, and provided withbushings at its ends, the one end of said hub-member being shaped toform a pulley and the other end being secured to the blade member, allas will hereinafter be more fully described.

The annexed drawing and the following description, set forth in'detailcertain means embodying my invention, the disclosed means, however,constituting but one of the various mechanical forms in which the principle of the invention may be applied.

In said annexed drawing:

Figure l represents a front elevation of a fan embodying my invention,and mounted upon a suitable journal rod.

Figure 2 represents a section taken upon the plane indicated by line:ll-ll in Figthe blade member thereto, and prior to the application ofthe end plate.

Figure 7 represents a fragmentary aXial section of a hub-member, showinga modified construction thereof.

The illustrated embodiment of my invention comprises two major elements,namely the blade member l, and the hub-member 2. The particular blademember shown includes four blades 3, 3, radiating from a centraldisk-lilre portion 4t, and formed at its central portion with a circularopening 5. Suitable struck-up ribs f'are formed to stiflen the blades,as will be readily understood, and the entire structure just described,in this particular, instance, is shown to havebeen struck Fup from asingle sheet of metal so as to form one integral structure.

The vhub-member 2 consists of the main hub-portion and the end disk. Themain hub'member is drawn from a disk of metal by means of suitable diesintovv Vthe form shown in Figure 6, in which one end forms a pulleyportion 7 and the other end a portion 8 of reduced diameter.4 A .fold 8forms a flange at one end ofthe pulley portion, and the shoulder 9 isformed at the other end of said pulley portion, from which shoulderprojects the cylindrical end portion ll. The extremity of the portion 8is of further reduced diameter, its outer dimension being substantiallyequal to the diameter of the opening 5 in the blade member. A struck-upplate l0, Figures i and 5, is provided which has an outer diameter equalto the interior diameter of the cylindrical end ll of thepulley member,so that said plate will 'lit within the latter, as

shown in dotted lines in Figure 6. After this plate has been so insertedin the pulley portion, the end ll thereof is spun around the lperipheryof the disk, as shown in Figure 2, whereby such plate isl securely fixedand forms ythejouter end of the pulley. I prefer to provide a1ieripheral depression l2 for the reception of the metal of the portionll so that the end face of said pulley may be perfectly flat, as alsoshown lin Figure :2. The central portion of the plate l() is providedwith an opening 18 surrounded by a flange 14.

The reduced extremity of the end of reduced diameter passes through thecentral pening 5 in the blade member, and. is spun outwardly and aroundthe exterior of the metal of the blade portion which surrounds saidcentral opening, as shown in ifigure 2, vvherebv the blade portion issecured in a fold of the hub-member and securely fixed therein.

The interior diameter of the openings in the two ends of the hub memberare made equal to each other and in each of these openings is driven asuitable bushing la', which provides the bearing for the journal rod l5upon which the fan is mounted.

The above construction may be slightly modified, as shown in Figure 7,wherein I have shown an end plate l0 which, instead of being enclosedWithin a. fold formed by the extremity of the main hub-portion, itselfforms a fold, as shown, and encloses the flange 9 of the pulley.l asWill be readily understood.

By constructing the main portion of the hub-member as described, andespecially by leaving the hub end thereof open and aftervvard closing itWith a separate plate, ll am enabled to insert upon the interior of thehub, ball or roller bearings which may at times be desirable substitutesfor the bushings la.

that l claim is:

l. A hub-member for an automobile fan comprising an integral seamlesssheet of metal shaped to form a pulley portion at one endvand a portionof different diameter from that of said pulley portion, at the otherend; together with a separate end plate secured to said pulley portion.

2. i hub-member for an automobile fan, comprising an integral seamlesssheet of metal shaped to form a pulley portion at one end and a portionof different diameter from that of said pulley portion at the other end;together With a separate end plate forming the outer end of the pulley;the outer end of said pulley portion and the said plate being connectedb-y means of a fold formed on the one and closing the peripheral portionof the other.

3. .er hub-member for an automobile fan, comprising main part drawn froman integral sheet of metal to form a pulley portion at one end thereofand a portion of reduced diameter at the other end thereof; said pulleyportion being formed at each end thereof with a flange; and a separateplate forming the outer end of the pulley and having its peripheralportion in engagement with the outer flange of said pulley portion.

4.-. A hub-member for an automobile fan, comprising a main part drawnfrom an in* tegral sheet of metal to form a pulley portion at one endand a portion of reduced diameter at the other end; said pulley portionhaving a fold at the inner end thereof forming a flange and formed witha ange at the outer end thereof; and a separate plate forming the outerend of the pulley and having its peripheral portion in engagement withthe outer flange of said pulley portion.

5. An automobile fan comprising the combination of a blade member, ahub-member, the latter comprising an integral seamless sheet of metalshaped to form a pulley portion and a portion of reduced diameter,together With a separate end plate secured to said pulley portion; andbushings seated in the end of said portion of reduced diameter and platerespectively; said portion of re duced diameter being secured in acentral opening formed in the blade member,

G. An automobile fan comprising the combination of a blade member; ahub-member, the latter comprising an integral seamless sheet of metalshaped to form a pulley portion, and a portion of reduced diameter, together With a separate end plate secured to said pulley portion; andbushings seated Yin the end of said portion of reduced diameter and diskrespectively; the extremity of said portion of reduced diameterprojecting` through a central opening formed in the blade member andturned outwardly on the exterior thereof so as to form a fold enveloping the peripheral portion of the blade member surrounding saidcentral opening.

7. main member of a fan-hub, consisting of a seamless drawn sheet metaltubular element having a pulley-portion at one end and a portion ofreduced diameter at the other end, a shoulder at the outer end of thepulley portion and a flange at the inner end of the latter, the outerend of the vertical portion being still further reduced, and the outerend of the pulley-portion'having a cylindrical portion projecting fromsaid shoulder.

Signed by me this l2 day of 0ctober, 1921.

ERNEST H. ARNOLD.

